OpenSimplex2F.h

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/*
 * Copyright (C) 2019-2020 KdotJPG (original work, previous license:
 * CC0 1.0 Universal, public domain dedication).
 *
 * Copyright (C) 2026 QuasarApp Group DOO
 * Licensed under the GNU Lesser General Public License v3.0 (LGPL-3.0),
 * see the accompanying LICENSE file.
 */
 
#ifndef OpenSimplex2F_h__
#define OpenSimplex2F_h__

 
#if ((__GNUC_STDC_INLINE__) || (__STDC_VERSION__ >= 199901L))
    #include <stdint.h>
    #define INLINE inline
#elif (defined (_MSC_VER) || defined (__GNUC_GNU_INLINE__))
    #include <stdint.h>
    #define INLINE __inline
#else
    /* ANSI C doesn't have inline or stdint.h. */
    #define INLINE
#endif
 
#ifdef __cplusplus
    extern "C" {
#endif
 
struct OpenSimplex2F_context;
 
/* Allocate and initialize OpenSimplex2F context */
int OpenSimplex2F(int64_t seed, struct OpenSimplex2F_context **ctx);
 
/* Free OpenSimplex2F context */
void OpenSimplex2F_free(struct OpenSimplex2F_context * ctx);
 
/* Free singleton lattice point data */
void OpenSimplex2F_shutdown(void);

double OpenSimplex2F_noise2(struct OpenSimplex2F_context *ctx, double x, double y);

double OpenSimplex2F_noise2_XBeforeY(struct OpenSimplex2F_context *ctx, double x, double y);

double OpenSimplex2F_noise3_Classic(struct OpenSimplex2F_context *ctx, double x, double y, double z);

double OpenSimplex2F_noise3_XYBeforeZ(struct OpenSimplex2F_context *ctx, double x, double y, double z);

double OpenSimplex2F_noise3_XZBeforeY(struct OpenSimplex2F_context *ctx, double x, double y, double z);

double OpenSimplex2F_noise4_Classic(struct OpenSimplex2F_context *ctx, double x, double y, double z, double w);

double OpenSimplex2F_noise4_XYBeforeZW(struct OpenSimplex2F_context *ctx, double x, double y, double z, double w);

double OpenSimplex2F_noise4_XZBeforeYW(struct OpenSimplex2F_context *ctx, double x, double y, double z, double w);

double OpenSimplex2F_noise4_XYZBeforeW(struct OpenSimplex2F_context *ctx, double x, double y, double z, double w);
 
#ifdef __cplusplus
    }
#endif
 
#endif